CN209486673U - A kind of novel bionic bumper assembly - Google Patents
A kind of novel bionic bumper assembly Download PDFInfo
- Publication number
- CN209486673U CN209486673U CN201920268213.0U CN201920268213U CN209486673U CN 209486673 U CN209486673 U CN 209486673U CN 201920268213 U CN201920268213 U CN 201920268213U CN 209486673 U CN209486673 U CN 209486673U
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- Prior art keywords
- bumper
- bionical
- cover plate
- absorption box
- energy
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 24
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 239000011159 matrix material Substances 0.000 claims abstract description 20
- 238000007747 plating Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000005457 optimization Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 6
- 230000002633 protecting effect Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 210000001699 lower leg Anatomy 0.000 description 10
- 238000004088 simulation Methods 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 210000000629 knee joint Anatomy 0.000 description 4
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 4
- 238000012913 prioritisation Methods 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003050 experimental design method Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 210000002303 tibia Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
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- Vibration Dampers (AREA)
Abstract
The utility model discloses a kind of novel bionic bumper assemblies, include bionical bumper, left bionical energy-absorption box and right bionical energy-absorption box；Bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, preceding cover plate, rear cover plate are separately positioned on bumper matrix front and rear sides and bumper matrix is connected；Left bionical energy-absorption box, right bionical energy-absorption box are in the open column shape of both ends open, and comprising four sides up and down, upper side and downside are surface plate, and left side and right side are corrugated plating.A kind of cooperative optimization method is also disclosed in the utility model; multidisciplinary collaboration Optimized model based on pedestrian protecting and vehicle crash-worthiness building novel bionic bumper assembly; it is optimized by the design variable to bumper assembly; under the premise of guaranteeing lightweight and control cost, further strengthens the protective effect to pedestrian and promote vehicle crash-worthiness.
Description
Technical field
The utility model belongs to vehicle passive safety protection field, and in particular to a kind of novel bionic bumper assembly.
Background technique
With the sustainable development of global economy, the sales volume and yield of vehicle are all constantly increasing, and traffic accident is also frequently sent out
It is raw.It is shown according to relevant departments' data statistics, in motor-vehicle accident, protection and vehicle of the bumper assembly to passenger and pedestrian
Body self-inflicted injury plays an important role.Seen automobile rear bumper is mostly hollow shell structure at present, energy-absorbing effect and anti-
Impact capacity is bad, and function is more single, and effective protection pedestrains safety is unable to when bumping against pedestrian, touches when with other vehicles
Car body itself and passenger cause life and property loss also vulnerable to serious damage when hitting.
Utility model content
The purpose of this utility model is to provide a kind of automobile buffering energy-absorbing step by step for the deficiency being previously mentioned in background technique
Rear bumper and optimization method.
The utility model uses following technical scheme to solve above-mentioned technical problem:
A kind of novel bionic bumper assembly includes bionical bumper, left bionical energy-absorption box and right bionical energy-absorption box；
The bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, wherein cover before described
Cover board, rear cover plate are separately positioned on bumper matrix front and rear sides and the bumper matrix is connected；
The bionical energy-absorption box in the left side, right bionical energy-absorption box are in the open column shape of both ends open, comprising up and down four
A side, upper side and downside are surface plate, and left side and right side are that corrugated plating, wave groove are parallel to upper side；It is described
The one end of both ends respectively with one end of left bionical energy-absorption box, right bionical energy-absorption box is connected on the inside of bionical bumper.
As a kind of further prioritization scheme of novel bionic bumper assembly of the utility model, the bionical energy-absorbing in a left side
Box, right bionical energy-absorption box are all made of carbon steel and are made.
As a kind of further prioritization scheme of novel bionic bumper assembly of the utility model, the preceding cover plate, after
Cover plate is all made of aluminum alloy materials and is made, and the bumper matrix is made of foamed aluminium material.
As a kind of further prioritization scheme of novel bionic bumper assembly of the utility model, the bumper matrix by
Indent hexagon unit cell array forms, the indent hexagon unit cell include top margin, bottom edge and four bevel edges, wherein top margin and
Bottom edge is parallel and length is 13mm, is highly 12mm, and the angle of the angle of top margin and two bevel edges, bottom edge and two bevel edges is equal
It is 67.5 degree, the thickness of top margin, bottom edge and four bevel edges is 0.8mm；The preceding cover plate with a thickness of 0.5mm, it is rear to cover
Plate with a thickness of 1mm；The thickness of four sides of bionical energy-absorption box is 1mm.
The invention also discloses a kind of multidisciplinary design optimization methods of novel bionic bumper assembly, include following step
It is rapid:
Step 1) chooses optimal Latin hypercube experimental design method, in each of selection in Isight optimization software
60 groups of design sample points are uniformly chosen in the preset threshold range of optimization design variable parameter；The design variable for needing to optimize
Parameter covers plate thickness T1, indent hexagonal honeycomb structure unit cell member thickness T2, rear covering plate thickness T3, bionical suction before being respectively
It can box thickness T4；
Step 2 establishes the CAD model of novel bionic bumper assembly in Catia software, is conducted into Hypermesh
Pre-treatment is carried out in software, and the material properties and thickness of each section are set；By means of pedestrian shank model and rigid wall, according to
The sample point that step 1) is chosen establishes 60 groups of pedestrian shank-calculation models of vehicle collision and 60 groups of rigid wall-frontal crash of vehicles respectively
Model；
The collision model established submission LS-DYNA is solved, obtains 60 groups of shank protection simulation results by step 3)
With 60 groups of frontal crash of vehicles simulation results, whole accordingly results is obtained；
Step 4) is protected for pedestrian shank, by second order polynomial Response surface meth od, comprehensive shank protection simulation result
Establish the second-order response surface model of proximal ends of tibia peak acceleration, the displacement of knee joint maximum shear, knee joint maximum bend angle；
For frontal crash of vehicles, by second order polynomial Response surface meth od, composite vehicle head-on crash simulation result establishes driver
Under-seat acceleration, the intrusion displacement of front panel longitudinal direction, rigid wall active force and bumper assembly energy-absorbing second-order response face mould
Type；Construct the second-order response surface model of novel bionic bumper assembly；
Step 5), the multidisciplinary association of the second-order response surface model foundation novel bionic bumper assembly according to step 4) building
Same optimized mathematical model, main system optimization aim is in order to improve the comprehensive performance and lightweight of bumper assembly, with comprehensive
Can index and bumper assembly quality be main system optimization target, two subsystems optimization problem be respectively pedestrian shank protection and
Frontal crash of vehicles, between each design variable optimal value and system level design variable difference and minimum value be optimization mesh
Mark completes the optimizing to solution, obtains optimum results after iteration several times.
The utility model has the following beneficial effects:
1, it the utility model proposes a kind of novel bionic bumper assembly, efficiently solves car body in collision accident and invades
Measure the defects of excessive, energy-absorbing effect is bad, pedestrian protecting effect is to be improved；
2, Multidisciplinary Optimization is carried out to bionical bumper assembly using multidisciplinary optimization algorithm, further increased novel
The energy absorption characteristics and pedestrian protecting effect of bumper.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of novel bionic bumper assembly of the utility model；
Fig. 2 is the schematic cross-section of left bionical energy-absorption box in the utility model；
Fig. 3 is the formation schematic diagram of bumper matrix in the utility model.
In figure, cover plate before 1-, 2- bumper matrix, cover plate after 3-, the left bionical energy-absorption box of 4-, the right bionical energy-absorbing of 5-
Box.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, including bionical bumper, Zuo Fang the utility model discloses a kind of novel bionic bumper assembly
Raw energy-absorption box and right bionical energy-absorption box；
The bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, wherein cover before described
Cover board, rear cover plate are separately positioned on bumper matrix front and rear sides and the bumper matrix is connected；
As shown in Fig. 2, the bionical energy-absorption box in the left side, right bionical energy-absorption box are in the open column shape of both ends open, include
Four sides up and down, upper side and downside are that surface plate, left side and right side are parallel to for corrugated plating, wave groove
Side；The one end of both ends respectively with one end of left bionical energy-absorption box, right bionical energy-absorption box is connected on the inside of the bionical bumper.
The bionical energy-absorption box in the left side, right bionical energy-absorption box are all made of carbon steel and are made, and preceding cover plate, rear cover plate are all made of
Aluminum alloy materials are made, and the bumper matrix is made of foamed aluminium material.
As shown in figure 3, the bumper matrix is formed by indent hexagon unit cell array, the indent hexagon unit cell packet
Containing top margin, bottom edge and four bevel edges, wherein top margin is parallel with bottom edge and length is 13mm, is highly 12mm, top margin and two
The angle of the angle of bevel edge, bottom edge and two bevel edges is 67.5 degree, and the thickness of top margin, bottom edge and four bevel edges is 0.8mm；
The preceding cover plate with a thickness of 0.5mm, rear cover plate with a thickness of 1mm；The thickness of four sides of bionical energy-absorption box is equal
For 1mm.
The invention also discloses a kind of multidisciplinary design optimization methods of novel bionic bumper assembly, include following step
It is rapid:
Step 1) chooses optimal Latin hypercube experimental design method, in each of selection in Isight optimization software
60 groups of design sample points are uniformly chosen in the preset threshold range of optimization design variable parameter；The design variable for needing to optimize
Parameter covers plate thickness T1, indent hexagonal honeycomb structure unit cell member thickness T2, rear covering plate thickness T3, bionical suction before being respectively
It can box thickness T4；
Step 2 establishes the CAD model of novel bionic bumper assembly in Catia software, is conducted into Hypermesh
Pre-treatment is carried out in software, and the material properties and thickness of each section are set；By means of pedestrian shank model and rigid wall, according to
The sample point that step 1) is chosen establishes 60 groups of pedestrian shank-calculation models of vehicle collision and 60 groups of rigid wall-frontal crash of vehicles respectively
Model；
The collision model established submission LS-DYNA is solved, obtains 60 groups of shank protection simulation results by step 3)
With 60 groups of frontal crash of vehicles simulation results, whole accordingly results is obtained；
Step 4) is protected for pedestrian shank, by second order polynomial Response surface meth od, comprehensive shank protection simulation result
Establish the second-order response surface model of proximal ends of tibia peak acceleration, the displacement of knee joint maximum shear, knee joint maximum bend angle；
For frontal crash of vehicles, by second order polynomial Response surface meth od, composite vehicle head-on crash simulation result establishes driver
Under-seat acceleration, the intrusion displacement of front panel longitudinal direction, rigid wall active force and bumper assembly energy-absorbing second-order response face mould
Type；Construct the second-order response surface model of novel bionic bumper assembly；
Step 5), the multidisciplinary association of the second-order response surface model foundation novel bionic bumper assembly according to step 4) building
Same optimized mathematical model, main system optimization aim is in order to improve the comprehensive performance and lightweight of bumper assembly, with comprehensive
Can index and bumper assembly quality be main system optimization target, two subsystems optimization problem be respectively pedestrian shank protection and
Frontal crash of vehicles, between each design variable optimal value and system level design variable difference and minimum value be optimization mesh
Mark completes the optimizing to solution, obtains optimum results after iteration several times.
Above-described is only preferred embodiments of the present invention, and those skilled in the art are come
It says, without departing from the principle of this utility model, several improvements and modifications can also be made, these improvements and modifications are also made
For the protection scope of the utility model.
Claims (4)
1. a kind of novel bionic bumper assembly, which is characterized in that include bionical bumper, left bionical energy-absorption box and right bionical suction
It can box；
The bionical bumper is arc-shaped, includes preceding cover plate, bumper matrix and rear cover plate, wherein the preceding cover plate,
Cover plate is separately positioned on bumper matrix front and rear sides afterwards and the bumper matrix is connected；
The bionical energy-absorption box in the left side, right bionical energy-absorption box are in the open column shape of both ends open, comprising four sides up and down
Face, upper side and downside are surface plate, and left side and right side are that corrugated plating, wave groove are parallel to upper side；It is described bionical
The one end of both ends respectively with one end of left bionical energy-absorption box, right bionical energy-absorption box is connected on the inside of bumper.
2. novel bionic bumper assembly according to claim 1, which is characterized in that the bionical energy-absorption box in the left side, right imitative
Raw energy-absorption box is all made of carbon steel and is made.
3. novel bionic bumper assembly according to claim 1, which is characterized in that the preceding cover plate, rear cover plate
It is all made of aluminum alloy materials to be made, the bumper matrix is made of foamed aluminium material.
4. novel bionic bumper assembly according to claim 1, which is characterized in that the bumper matrix is by indent six
Side shape unit cell array forms, and the indent hexagon unit cell includes top margin, bottom edge and four bevel edges, wherein top margin and bottom edge are flat
Row and length is 13mm, is highly 12mm, the angle of the angle of top margin and two bevel edges, bottom edge and two bevel edges is 67.5
Degree, the thickness of top margin, bottom edge and four bevel edges is 0.8mm；The preceding cover plate with a thickness of 0.5mm, the thickness of rear cover plate
Degree is 1mm；The thickness of four sides of bionical energy-absorption box is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920268213.0U CN209486673U (en) | 2019-03-04 | 2019-03-04 | A kind of novel bionic bumper assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920268213.0U CN209486673U (en) | 2019-03-04 | 2019-03-04 | A kind of novel bionic bumper assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209486673U true CN209486673U (en) | 2019-10-11 |
Family
ID=68134186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920268213.0U Expired - Fee Related CN209486673U (en) | 2019-03-04 | 2019-03-04 | A kind of novel bionic bumper assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209486673U (en) |
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2019
- 2019-03-04 CN CN201920268213.0U patent/CN209486673U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191011 Termination date: 20210304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |